Submission #10087

#	Time	Username	Problem	Language	Result	Execution time	Memory
10087		gyunt	Hotter Colder (IOI10_hottercolder)	C++98	50 / 100	808 ms	8184 KiB

hottercolder

#include <iostream>
#include <assert.h>
#include "grader.h"

using namespace std;

#define MAX_N 1000000
#define min(a, b) (((a) > (b))?(b):(a))
#define max(a, b) (((a) > (b))?(a):(b))

//*
int HC(int n)
{
    int min = 1, max = n, previous_guess = 1, guess = 0, hot_cool;
    Guess(1);
    
    while (min < max)
    {
        //assert(min > 0 && min <= n);
        //assert(max > 0 && max <= n);
        
        guess = min + max - previous_guess;
        guess = min(guess, n);
        guess = max(guess, 1);
        
        
        assert( guess >= 1 && guess <= n);
        hot_cool = Guess(guess);
        
        if (hot_cool == 0)
        {
            //assert((previous_guess + guess + 1) & 1);
            return ((previous_guess + guess) >> 1);
        }
        
        int mid = (previous_guess + guess) / 2;
        int mod = (previous_guess + guess) & 1;
        
        if (hot_cool > 0)
        {
            if (guess > previous_guess)
                min = mid + mod;
            else
                max = mid;
        }
        else
        {
            //assert(hot_cool < 0);
            if (guess > previous_guess)
                max = mid;
            else
                min = mid + mod;
        }
        
        previous_guess = guess;
    }
    return min;
}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25